Combined condenser and leak-coil.



TENTED APR. 4, 1905 W'. W'. MASSE.

COMBINED, OGNDBNSER AND LBAK L.

APPLICATION FILED TUNE 18,1904.

UNITED STATTs WALTER XV. h/IASSIIC, F IPI-` atented April fi, i905.

UNHCR GNIBlNED CONDENi-E ND 'L EAK-GCZ'L.

dated April el, 1905.

To (1f/ZZ whom may con/ocra:

coil in the present Vexample ot my invention Be it known that I, dfrAL'rni-i lV. h'iassir., a l is wound upon the exterior ot said tube, but

citizen of the United States, residing at iirovidence, in the county of Providence and State of Rhode Island, have invented new and useful Improvements in a Combined Condenser and Leak-Coil, ot' which the following is a specilication.

My invention reiates to improvemen s in a combined condenser and leak-coil tor wirelesstelegraphy apparatus, and has Vter its object to prevent disturbances from local atmospheric electricity to insure that ail oscillatory currents will pass te the receiving instrument and at the same time attune.

In wireless-telegraphy apparatus prior to my invention the arrangement ol. condenser and leak-coil was such that a large percentage of the oscillatory currents escaped to the ground without going to the receiving instrument, passing through the leak-coil by the condenser ciiiect produced by the several turns ot' wire. By my invention this serious diiiiculty is overcome and a new arrangement is provided whereby loss ot the oscillatory currents is substantially prevented and ali or substantially all thereof are caused to pass through the receiving' instrument, at the same time obtaining an etticient tuning etiect.y

To the end stated my invention consists in a combined condenser' and leale-coil arranged and operating in the manner licreinat'ter set forth.

That which I regard as new will be set `forth in the accompanying clauses of claim.

In the drawing, which illustrates that which I regard as the best known embodiment ot my invention, the figure is a diagrammatic view, partly in section and partly in elevation.

In the said drawing the reference-numerai l designates generally my improved combined condenser and leali-coil. This is arranged upon a suitable base 2, being supported thereon by means et standards 3. The apparatus comprises an insulating-tube e, the ends of which are disposed in the standards 3, and associated therewith is a wire leak-coii forming one coating of the condenser.

This

may be arranged intcriorly thereof. 'Ihe eX- tremities or terminals ol said coil are connected to binding-poetst and 7, as shown at o and 'T12 One terminal otl wire, which is shown as connected to the bindingepost 6, leads througli said bimling-postto ground by wire t3". The other extremity or terminal oi the wire ot' the coii communicates, through binding-post 7, with the vertical wire 7 et the system, which leads from the aerial instrument Adilista'oiyy arranged within the insulating-tube #i is a metal tube 9, forming the other side ot the condenser and luivingan exposed handle 9, by which it may be adjusted to various degrees within said insulatu ing-tube.

IO represents a contact shown as a contactspring that is always in operative contact with the tube S. rthis spring is connected to a binding-post l1, 'from which leads a conductor l2 through a responder or coherer 13 to ground.

le designates the receiver-circuit, which inciudes a. battery l5 and receiving instrir ment I6.

In operation the oscillatory currents from the aeriai instrument 8 pass by way ot the vertical wire 7b through binding-post I to the coil then bythe condenser eliect to the tube 9, and thence to conductor i2, coherer or responder to ground, while atmospheric electricity or direct currents pass by way ol" the coil 5 to ground through terminai 6, bindingposts G, and ground-wire (ih, the two currents being thus el'iiciently selliarated. The condenser-tube is aifijustahly arranged within the coil in order tlvlt the capacity may be adjust" cd or attuned, 1 zus allowing the luli strength et the oscillat v currents to pass through thc receiving instrument.

rthe operatoil i 'il adjust the tube within the coii tothe requisite degree to produce the best eiicct in the receivers, and the degree to which said tube shouid he adjusted within said coii wiil he ascertained by the operator by trial or by caicnlatio' 'i previously ligured and marked on the tu e or otherwise.

Having thus described my invention, what l' elimini isl. in a, combined condenser anal leek-Coil for wireless-telegraphy apparatus, the combination with :i coil one terminal of which is connected to the vertical Wire and the other to ground, and :t metal tube associated with Said coil and having operative connection with the receiving` inetrument and ground.

2. ln :i combined condenser and leali-coil for wirelesS-teleg'mphy apparatus, the oombination with e coil one terminal of which is connected to the Vertical Wire and. Athe other to grouncb and o metal tube eeljustaliijg' zirrengecl with relation to Suid coil land having operative connection with the receiving; in- Strmnent and ground. 

